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Norwalk

(Encyclopedia)Norwalk nôrˈwôkˌ [key]. 1 City (1990 pop. 94,279), Los Angeles co., S Calif.; settled in the 1850s, inc. 1957. With the arrival (1875) of the Southern Pacific RR, it became a center for the dairy ...

noise

(Encyclopedia)noise, any signal that does not convey useful information. Electrical noise consists of electrical currents or voltages that interfere with the operation of electronic systems. Electrical noise limits...

Ascension, island

(Encyclopedia)Ascension əsĕnˈchən [key], island, 34 sq mi (88 sq km), in the S Atlantic, NW of Saint Helena and belonging to the British St. Helena overseas territory. Georgetown i...

Klein, Yves

(Encyclopedia)Klein, Yves, 1928–62, French painter. With critic Pierre Restany, he was a leader of the avant-garde movement called Nouveau Réalisme (founded 1960). In the 1950s Klein began to work in monochromes...

Young Men's Christian Association

(Encyclopedia)Young Men's Christian Association, (the Y or YMCA), organization having as its objective the development of values and behaviors that are consistent with Christian principles. Despite its name, member...

Soane, Sir John

(Encyclopedia)Soane, Sir John sōn [key], 1753–1837, English architect. After studying with George Dance, the younger, Soane won a fellowship to Rome. He toured Italy and returned in 1780 to begin his practice in...

triforium

(Encyclopedia)triforium trīfôrˈēəm [key], in church architecture, an arcaded gallery above the arches of the nave. In the interiors of medieval churches each bay of the nave wall customarily had three division...

center of mass

(Encyclopedia)center of mass, the point at which all the mass of a body may be considered to be concentrated in analyzing its motion. The center of mass of a sphere of uniform density coincides with the center of t...

Riemann, Bernhard

(Encyclopedia)Riemann, Bernhard (Georg Friedrich Bernhard Riemann) gāˈôrk frēˈdrĭkh bĕrnˈhärt rēˈmän [key], 1826–66, German mathematician. He studied at the universities of Göttingen and Berlin and w...

Orbiting Geophysical Observatory

(Encyclopedia)Orbiting Geophysical Observatory (OGO), series of six orbiting observatories (see observatory, orbiting) launched between 1964 and 1969 by the National Aeronautics and Space Administration (NASA) to s...